Face muscle OINAs

Occipitofrontalis - occipital body origin and insertion

O: occipital bone; i: aponeurosis

Occipitofrontalis - frontal body origin and insertion

O: aponeurosis; i: skin of eyebrows and nose

Facial muscles nerve:

Facial nerve (VII)

Masseter nerve

Trigeminal (V)

Occipitofrontalis action

Move scalp back and forth, wrinkle forehead, elevates eyebrows

Orbicularis oculi origin

Frontal and maxillary bones

Orbicularis oculi insertion

circles orbit, extends within eyelid

Orbicularis oculi action

closes eyelids

Orbicularis oris origin

nasal septum, maxilla, mandible

Orbicularis oris insertion

fascia and lip muscles

Orbicularis oris action

closes lips and is important in mastication

Levator labii superioris origin

maxilla

Levator labii superioris insertion

orbicular oris of upper lip

Levator labii superioris action

elevate upper lip

Levator angula oris origin

maxilla

Levator angula oris insertion

orbicularis oris at mouth corner

Levator angula oris action

smiling muscle

Zygomaticus major origin

zygomatic arch

Zygomaticus major insertion

orbicularis oris at mouth corner

Zygomaticus major action

real smiler (draws angle of mouth superolaterally)

Mentalis origin

mandible near symphysis

Mentalis insertion

chin skin

Mentalis action

elevate lower lip

Depressor anguli oris origin

lower border of mandible

Depressor anguli oris insertion

lip near mouth angle

Depressor anguli oris action

depress angle (corner) of mouth

Buccinator origin

alveolar ridge of mandible and maxilla

Buccinator insertion

orbicularis oris at mouth angle

Buccinator action

sucks in sides of mouth, compresses cheeks, pulls corner of mouth laterally (like when blowing on trumpet)

Risorius origin

platysma and masseter fascia

Risorius insertion

orbicularis oris and skin at mouth angle

Risorius action

abducts angle of mouth

Masseter origin

zygomatic arch

Masseter insertion

angle and ramus of mandible